As you can see, DnD games are not "by far" more liked or more popular. They aren't even in the top. And the only modern one - Pathfinder - doesn't even get into the top half of the list.
If you know more pure(-ish) dnd games, throw the titles at me, I'll add to the list. Maybe I'm just missing a critical title or two I'm not aware of. Nevertheless, my preliminary conclusion is that D&D fans tend to live in a bubble and an echo chamber, with all the bias that brings. Including, by the way, people working at Larian Studios - they are clearly D&D fans, and I think they got carried away, or maybe it was a conscious gamble.